Marinated Kale Salad

Ingredients

• 1 pound Tuscan or curly kale, stemmed and coarsely chopped
• 3 tablespoons olive oil
• 3/4 teaspoon kosher salt, divided
• 1/2 cup thinly sliced red onion
• 1 teaspoon ground sumac (optional)
• 1/2 teaspoon toasted sesame seeds
• 1 tablespoon fresh lemon juice
• 2 teaspoons Dijon mustard
• 1 garlic clove, minced
• 1 (14-ounce) can unsalted chickpeas, rinsed and drained
• 1/4 teaspoon freshly ground black pepper